OMEGA REF. 176.004 "BIG BLUE" SEAMASTER
Omega, "Seamaster, Automatic, 120m / 400ft," movement No.
36259134, Ref. 176.004. Made in 1972.
Fine, self-winding, water-resistant, stainless steel wristwatch with round button chronograph, registers, central minute
counter, 24-hour indication, date and a stainless steel Omega
mesh bracelet with slip-in clasp.
Three-body, polished and brushed, unidirectional revolving
graduated midnight blue bezel for decompression timing,
screwed down case back and crown, sapphire crystal.
Blue with luminous indexes, outer minute divisions, outermost
Arabic 5 minute/seconds markers, subsidiary dials
for the seconds and 12-hour recorder, 60-minute register by
luminous central orange "arrow" hand, the 24-hour indication
by arrow on a revolving disc at 9, aperture for the date.
Luminous white baton hands.
Cal. 1040, copper-colored, 22 jewels, straight-line
lever escapement, monometallic balance, shock absorber,
self-compensating flat balance spring.